Open source Breathalyzer? There’s a shield for thatOpen source Breathalyzer? There’s a shield for thatOpen source Breathalyzer? There’s a shield for that

Davide Gomba — September 17th, 2010

I was really impressed from this instructable on a brethalizer microphone. [Caring Smith] and [GfxHax] worked on a more reliable project: a DrinkShield.

The GfxHax drink shield is an Arduino shield that converts an arduino into an Open Source Breathalyzer. It come complete with a light bar to show the intoxiciation levels. There is a series of 11 lights down one side of the shield that go from green to yellow and ultimately to red. There are also player ready lights. Why are there player ready lights? Well, this is because the shield is not just a standard Breathalyzer but can be used as a party game. With the GfxHax drinkShield you also get a GPL game that lets you play with your friends and keep highscores! This software is licensed under the GPL so you can add features and will have unlimited free updates to new versions.